Printing telegraph apparatus



A 1951 A. E. THOMPSON A 2,572,075

PRINTING TELEGRAPH APPARATUS Filed Oct. 22, 1947 ALFREP E. THOMPSON ATTORNEY i atenteci Oct. 23,

Mire! anta a Signor t e and Com iminat s Limited; Croy l nr don, samba, British content Appli ii njqet ber i2, m ifiiiai iilio In Great Britain October 24,1946

This 'inverition relates to, print ng telegraph atiis and more particularly to m'eans' t be d'ed for enablingthe records oi a'rece'ivegl -ge to be readily distinguishable from a copy A transmitted message. Y J

It has previously been proposed to use a two? colour typewriter ribbon associated with posi ti'onin'g mechanism under the control of the keyboard; in'fs'uc'h' manner that an incoming messages record of messages under control of said trans r' and means for causing a mark of iden:

ti non to be printed automaticalhf the, margin of all messages of one kind of message tddis tinguis'h such messages from the other kind. For example, a vertical line,,slightly wa er than the height of the normal type, may be printed alongside each line of the m'es'sageof all local record copy, The appearance of a continu oil's line extending from top of bottom orth margin of all local record copy is thus produced; One" embodiment of the invention will now be described in conjunction with the accompanying drawing, in which:

Fig. 1 shows the mark identification apparatus in pirin tirig position, and

Fig; 2 shows a portion of the mark identifica= tio'n apparatus in non-printing position. x

The accompan ing drawing shows a same-eat part of the mechanism of a page printingftele graph receiver and an associated transmitter en'ablethe invention to be understood. As showii in Fig. l, the cam shaft of the transmitter earn-es;

a cam l which actuate's' a two-armed'leve'il for associated with a receiver of thekind-cor'r i prising a stationary platen and a moving typewheel chariot. Means are provided whereby in wellknown manner the receiver is connected to receive messages from a distant station, or operates print alo'cal record df'nies'sagesunder control of saidtransmitter. interposing membe fe' having a marking face 3A, is disposed along are the beginning-of-line position of the typewheel chariot and is mounted to slide vertically inguide i and normally held by spring 4 with ii p'er end lower than the ink-ribbon 5 by i which characters are printed on a sheet per carried by aplaten 6 mounted in a sta ti nary part of the machine.

;iriterpqsing member 3 carries a lever 1 atgedpya spring '8 to' rotate counter-clockwise. The typew'heel chariotfla carries a projection 9, which, when the chariot is in beginning-of-line position, pushes lever 'i into a position to be engages bylever 2, as shown in the drawing. this position, therefore, the cam I if set into on undercontrol of the keyboard acts on I, which in turn acts on lever I to lift inter- 3; ngmember 3 into the position shown in the drawing 'Inthi's' position it is temporarily held stop on the member 3 engaging a member H may be the upper end of the guide In ifi wh c'hinterposing member 3 s1ides. The upper end'mf the member 3 is then opposite the ink ribi io n 5 and also the end of a lever ll actuated by 'tli printing cam in the receiver.

Keys l3 are representative of a full set ofkeys. key ea'm of "a printing telegraph. tter. Universal bar I4 is adaptedto be:

nio againstth'e tension of spring [4a, upon the: depression of any of the keys l3. Pivot member:

1535 adapted to be moved in a clockwise direction; dpammdvemnt of bar I4. I

Pivotnfember l5 actuates clutch controller IB via th arm' 1''! which connects the pivot member ahd "e" 'lutch controller. Clutch mechanism is. ntrol' of the controller It causes the 1 ft-l9 to rotate the 'cam sleeve l9a when. aflyky T3 is depressed. Cam I is carried upon ca leei' [911 Cam 2B is similarly mounted. 'up oarhsleeve IBa-and contains a cylinder i'cain 2ll'i similarly mounted upon cam". 9a and imparts to driving member 21- which is perpendicular to the plane of v I ion of the c'am'sleeve, by means of cant; folio ei'"-2-2 'a-tta'chedto driving member 2l at.

roove 1n; the ca'm 2A]. The hump on cam coincides witlr the maximum curve of thegroove "23 in cam gfl. Driving member is 'pivdtally a to 'rle eI-id of printing lever H and causes lfe V. follower 2 nevu in a" right-hand direction b f the 'rfiotion derived from said ca to pr a 17613111031 11119 011 the paper alongs1deuinirfg are me or typed characters;

wand-actuatedby the continuous curved" stir ikes'tlie' upper end of interposing' member 3 clear of member l but is held in position to strike the ink ribbon against the paper on platen 6 by a step l2 under which the end of lever ll When lever l I is withdrawn the interengages. posing member 3 is lowered by its spring 4. The typewheel chariot is moved one step to the right in the drawing and the movement of projection 9 away from lever 1 allows that lever to be moved counter-clockwise to remove its end from con- I tact with lever 2. Fig. 2 shows interposing member 3 in the unoperated position and with. the typewheel chariot 9a moved out of begin-' chariot again returns to beginning-of-line position when a vertical line on the paper will again be printed.

When the receiver is actuated by a received message cam I will be stationary and interposing member 3 will not be moved at all. Thus'the vertical line will only be printed for a home record of transmitted messages.

As stated above the vertical line printed is preferably of such length that the lines printed extend continuously from top to bottom of the margin.

What is claimed is:

1. A page printing telegraph apparatus adapted to print messages received from a distant station and to print a local record of messages transmitted to a distant station by said apparatus, comprising a platen around which a message blank is adapted to be placed, means forcausing a mark of larger dimensions than the size of the printing type of said apparatus to be printed in 4 by said apparatus, a movable, vertical type member located near one extremity of said platen beyond the line of travel of said chariot, said member having a type face equal to the combined height of the printing type of said apparatus and the space between printed lines, means for transmitting movement of said cam to said member to raise same to printing position, a lever attached to said member and adapted to selectively engage said transmission means, spring means for normally urging said lever out of engagement with said transmission means, means attached to said chariot for engaging said lever with said transmission means upon return of said chariot to the beginning-of-line position thereof, means for holding said type member in printing position, a type hammer adapted to strike said type member, means in said apparatus for actuating said hammer, means operative during the actuation offsaid hammer for disengaging said type member from said holding means, whereby there is produced on all messages transmitted by said apparatus a continuous line extending from top 0! bottom of the margin thereof.

.5. A page printing telegraph apparatus adapted to print messages from a distant station and to print a local record of messages transmitted to said message blank to identify all messages of the margin of said message blank to identify all messages of one kind, said means selectively actuated by means under control of said apparatus and adapted to operate adjacent each line of printing of such messages of one kind.

2. A page printing telegraph apparatus as claimed in claim 1, wherein said marking means comprises a vertical type member having a type face equal to the combined height of the printing type of said apparatus and the Space between printed lines, whereb there is produced on all messages of one kind a continuous line extending from top to bottom of the margin thereof.

'3. A page printing telegraph apparatus as claimed in claim 1, wherein said means for selectively actuating said marking means comprises a movable typewheel chariot, adapted to move in a plane parallel to the axis of said platen, a cam operated by said apparatus, means for transmitting movement of said cam to said marking mean to raise same to a printing position, a. lever attached to said marking means and adapted to selectively engage said transmission means, means attached to said chariot for engaging said lever with said transmission means upon return of. said chariot to the beginning-of-line said apparatus, means for rotating said cam shaft one revolution for each signal transmitted one kind, a movable typewheel chariot adapted to move in a plane parallel to the axis of said platen, a type hammer adapted to strike said marking means under control of said apparatus, a cam operated by said apparatus, means for transmitting movement of said cam to said marking means to raise same to a printing position,

means for holding said marking means in posiincludes a first step and a second step on said marking means, said second step spaced from said first step, a fixed edgemember engaging said first step when said marking means is not in araised position, said fixed edge member adapted to engage said second step when said marking means is in a raised position, said marking means adapted to be released from engagement of said fixed edge member with said second step upon being struck by said type hammer.

" ALFRED EDWARD THOMPSON.

REFERENCES CITED The following references are of record in the file of v this patent: v

UNITED STATES PATENTS Number Name Date 1,904,164 Morton Apr. 18, 1933 2,107,044 Potts Feb. 1, 1938 2,293,093 Zenner Aug. 18, 1942 Potts Oct. 5, 1943 

